Re: How to pass arguments to PigScript; + How to compare data atoms within pig script

[Latha]

Thankyou :) it Worked!

Thanks & Regards,
Srilatha

On Sun, Oct 5, 2008 at 9:09 AM, Santhosh Srinivasan <[EMAIL PROTECTED]>wrote:

> The pig script should be the last argument in your command line, i.e.,
>
> bash$  java  -cp $CLASSPATH/pig.jar:$HADOOPSITEPATH  org.apache.pig.Main
> -param string=sample search.pig
>
> Santhosh
>
> -----Original Message-----
> From: Latha [EMAIL PROTECTED]
> Sent: Saturday, October 04, 2008 8:20 PM
> To: pig-user@incubator.apache.org
> Subject: Re: How to pass arguments to PigScript; + How to compare data
> atoms within pig script
>
> Thankyou Santosh!  The link is quite useful.
>
> However, am not able to pass parameters to pig script the following way.
> Could you please help me to get out of this error.
>
> bash$  java  -cp $CLASSPATH/pig.jar:$HADOOPSITEPATH  org.apache.pig.Main
> search.pig -param string=sample
>
> java.lang.RuntimeException: You can only run one pig script at a time
> from
> the command line.
>        at org.apache.pig.Main.main(Main.java:276)
>
>
> Am using pig 0.1.0. Had downloaded the source and compiled to get
> pig.jar.Also am using Hadoop 0.17 branch.
>
> Regards,
> Srilatha
>
>
> On Sun, Oct 5, 2008 at 7:18 AM, Santhosh Srinivasan
> <[EMAIL PROTECTED]>wrote:
>
> > Use parameter substitution -
> > http://wiki.apache.org/pig/ParameterSubstitution
> >
> > Santhosh
> >
> > -----Original Message-----
> > From: Latha [EMAIL PROTECTED]
> > Sent: Saturday, October 04, 2008 6:33 PM
> > To: pig-user@incubator.apache.org
> > Subject: How to pass arguments to PigScript; + How to compare data
> atoms
> > within pig script
> >
> > Greetings!
> >
> > My requirement is to search an input string in a given file and output
> > all
> > lines of the file that contains the string.
> >
> > Am writing the following searchString.pig script( Have integrated
> hadoop
> > with pig. Hence, all my files are available at hdfs)
> >
> > searchString.info : text file will have a single word 'sample' .
> > indexFile             : text file will have 10 key-value pairs
> separated
> > by
> > space,  with word 'sample' appearing in 2 or 3 lines.
> >
> > <searchString.pig>
> >
> >  searchStr = load 'searchString.info' using PigStorage();
> >  A = load 'indexFile' using PigStorage(' ') as (str,filename);
> > -- This string comparision works!
> >  Y = FILTER A BY str eq  'abc';
> >
> > --None of the below works
> >  Y = FILTER A BY str eq searchStr ;
> >  Y = FILTER A BY str eq searchStr.$0;
> >
> >
> > Instead of hardcoding the search string, I would like to search the
> > string
> > available at searchStr dataatom.
> > 1. Which way can i compare "A.str" with "searchStr" data atom?
> > 2. Is there a way i can pass search string as an argument to the Pig
> > Script?
> >
> > Thankyou for your assistance.
> > Regards,
> > Srilatha
> >
>